I wanted to try this tangle, so I did it as a monotangle (one tangle on the tile). It is called On Target, by CZT Barbara Finwall. I didn't realize until now, when I posted it here, that I didn't shade it! It had so much optical illusion going on that I forgot that part. I am not sure if it even needs it, or if it would enhance or take away from it. I need to ponder that awhile. Let me know what you think!